ajs writes: "World of Warcraft's Wrath of the Lich King expansion was staggered into 4 phases. The fourth and final phase, patch 3.3, is slated to be released tomorrow, December 8th. This patch is significant in that it will be the first introduction of one of the most anticipated new features in the game since PvP arenas: the cross-realmrandom dungeon as well as the release of new end-game dungeons for 5, 10 and 25-player groups. The ultimate fight against the expansion's antagonist, The Lich King AKA Arthas, will be gated as each of the four wings of the final dungeon are opened in turn--a process that may take several months. The next announced patch after 3.3 (presumably 4.0) will be the release of Cataclysm, the next expansion."

By the way, this was a well-sourced industry rumor yesterday (with multiple sites that have inside tracks with Blizzard suggesting it would happen), but now it's reality. The servers are down and the patch is being applied by anyone who runs the client.

So the patch has sort of landed, but no one's jumping for joy yet. The whole random dungeon feature is so massively overloaded that people are being stuck in crashed instances like flypaper, unable to get their characters back until GMs find a way to release the (probably thousands of) players that are trapped in this way.